"After producing the Mach One Shoulder Rest for about 10
years and believing the ergonomic shape of the rest to be so perfect that there
is no room for improvement, I started experimenting again. The result is an
elegant, even more ergonomic rest. The new idea is to continue hugging the
shoulder as far as possible, creating a slight "hook" on the shoulder
side of the Rest. From the start my idea was to create the slimmest Rest ever.
I eliminated the thick unsightly foam pads, replacing them with the best quality
nubuck leather pads. To my surprise the new rest with "hook" fits so
well and since it does not slide off the shoulder, it almost eliminates the
need for the leather pad. In this condition the rest is surprisingly only 5.5
mm thick. The Violin Mach Rest will fit 3/4 and full size violin".